feat(proj): init

tests/TileServer.UnitTests/TileDataTests.cs

@@ -0,0 +1,31 @@
+using System.IO.Compression;
+using TileServer.Domain.Tiles;
+
+namespace TileServer.UnitTests;
+
+public sealed class TileDataTests
+{
+    [Fact]
+    public void Uncompressed_ReturnsRawBytesWhenNotGzipped()
+    {
+        var payload = new byte[] { 0x1A, 0x2B, 0x3C };
+        var tile = new TileData(payload, false);
+
+        Assert.Same(payload, tile.Uncompressed());
+    }
+
+    [Fact]
+    public void Uncompressed_InflatesGzipPayload()
+    {
+        var raw = "mvt-payload"u8.ToArray();
+        using var buffer = new MemoryStream();
+        using (var gzip = new GZipStream(buffer, CompressionLevel.SmallestSize, leaveOpen: true))
+        {
+            gzip.Write(raw);
+        }
+
+        var tile = new TileData(buffer.ToArray(), true);
+        Assert.True(TileData.IsGzip(tile.Bytes));
+        Assert.Equal(raw, tile.Uncompressed());
+    }
+}